the 50 trim straight T3. not a t3/t4. just a t3 50 trim. .48 a/r turbine housing.

http://www.boostedmiata.com/gallery2...ta/turbo/ebay/

You can see in the pics the turbine inducer blades are crazy large, I want to try those real Garrett parts one day and see how it affects spool rate.

 

Pretty cool link, got also turbo rebuild pics of T3 and T25 and many others of his project.